Emerging online arenas offer new possibilities for the study of online communication aided by computer-assisted methods of data collection. However, these possibilities also entail certain challenges. As online data collection such as “scraping” of web content becomes part of the methodological repertoire of non-technically inclined researchers, and as the data available for researchers to place under scrutiny grows ever more plentiful, we point to two challenges that need to be tackled if we are to grasp current developments. How can we make sense of the massive amounts of novel forms of mediated communication, and how can we approach them in an ethically sound manner? While all branches of media and communication research face these challenges, we are specifically interested in discussing them in relation to the broad field of political communication. Political communication research tries to understand and explain all forms of “purposeful communication about politics” (McNair 2003: 23). To do so, researchers have sampled newspaper articles, studied a selection of television broadcasts, analysed documentaries, or listened in on specific radio programmes. In the age of the mass media, these were perfectly legitimate approaches – and they still are. Yet political communication research has had to expand its arsenal of approaches. During the roughly 15 years that have passed since the Web emerged as a mainstream platform for mediated communication, researchers have tried to grasp its effect on political communication. The majority of such work, however, notably relies on traditional methodological approaches. If we wish to properly understand online political communication, we need to explore novel possibilities. To assess the importance of blog posts, twitter messages and other so-called social media outlets as platforms for political expression, to take one pertinent example, we first need to get an overview of the different types of these mediated forms of expression in our polity. This does not only entail intricate definitional delimitations, but also a some what daunting methodological task. Those trying to get an overview of the online communication during the latest Swedish election, for instance, would find a lot of material – too much even to get a perspective on, perhaps. The number of messages or utterances users of one not very widespread service (Twitter) themselves labelled #val2010” (“election2010”) amounted to over 100,000 during a one-month period leading up to the election. Still, empirical endeavours based on such data constitute necessary steps on the way forward for political communication research. And they clearly entail some challenges.
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